Assorted list of functions I looked at that affect the camp behavior in SWSH. All of this is from Sword 1.3.2. Most labels are mine, some are copied from BDSP.

• camp_determine_initial_behavior: used to decide what behavior a Pokémon should be doing when entering camp or leaving a curry
• camp_decide_groups: decides which Pokémon should be doing group activities prior to randomly picking initial behavior
• camp_get_random_behavior_enum: affects random behaviors when wandering around camp
• camp_check_run_up_to_player: decides if they need to run up to the player (not item-related)
• camp_item_get_success: checks if a Pokémon successfully finds an item
• sub_710126B920: unsure what most of this does, contains the 5 min timer check
• camp_load_data: the main use of this function was that it could be searched by the text "camp" and gives us the location of the camp flatbuffers, which are in pokecamp.gfpak